I have a fiberglass shower stall and plexiglass shower doors. They are very hard to clean due to water deposits. We have a well but our water is not brutally hard. Nonetheless, we've tried many over-the-counter cleaning products many of which claim to be specifically for removing water deposits. Some of them work better than others but it's still a real struggle!
Can you recommend a product which may really work!!?? Also, is it okay to use a scotchbrite pad to clean the surfaces? I've always used a soft bristle scrub brush and rag.